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The Invention of the track circuit : the history of Dr. William Robinson's invention of the track circuit, the fundamental unit which made possible our present automatic block signaling and interlocking systems

Publication date: 1922
Publisher: New York : Signal Section, American Railway Association
Collection: cdl; americana
Contributor: University of California Libraries
Language: English
Item Size: 327.8M

viii, 113 p., [l] leaf of plates : 25 cm

Addeddate: 2007-01-05 00:25:17
Call number: nrlf_ucb:GLAD-256479
Camera: 1Ds
Collection-library: nrlf_ucb
Copyright-evidence: Evidence reported by scanner-ian-white for item inventionoftrack00newyrich on January 5, 2007: no visible notice of copyright; stated date is 1922.
Copyright-evidence-date: 20070105002457
Copyright-evidence-operator: scanner-ian-white
Copyright-region: US
External-identifier: urn:oclc:record:809567554
Foldoutcount: 0
Identifier: inventionoftrack00newyrich
Identifier-ark: ark:/13960/t4wh2fn37
Identifier-bib: GLAD-256479
Lcamid: 318500
Lccn: 83242117
Ocr_converted: abbyy-to-hocr 1.1.37
Ocr_module_version: 0.0.21
Openlibrary_edition: OL7189866M
Openlibrary_work: OL16756776W
Page_number_confidence: 87
Page_number_module_version: 1.0.3
Pages: 134
Possible copyright status: NOT_IN_COPYRIGHT
Ppi: 500
Rcamid: 319916
Scandate: 20070106005017
Scanner: rich4
Scanningcenter: rich
Worldcat (source edition): 17178527